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Light microscopic images of 5637 and HDF-1 cells. Untreated 5637 cells (A). 5637 cells treated with 1.625% DMSO (B) represent little morphological changes as compared with untreated cells. 5637 cells treated with 65 μg/ml 7-IP (C) revealed prominent cytoplasmic granulation and cell death. Untreated HDF-1 cells (D). HDF-1 cells treated with 2.5% DMSO (E). HDF-1 cells treated with 100 μg/ml 7-IP after 72 h with little changes in their morphology (F).
